Features Yamaha YHR-667 Double French Horn -- Geyer Style Professional Model Clear Lacquer Finish -- Hammered & Annealed Bell 12 1/8" Yellow Brass Bell -- .472" Bore -- Medium Large Throat Hand-Lapped Rotary Valves & Slides -- Articulated Key Levers Includes Deluxe Case & Mouthpiece Description Product Description The YHR-667 is a Geyer style horn with medium-large throat for moderate resistance to air flow. Rotary valves and slides that have been hand-lapped are airtight and have smooth action. Articulated key levers have responsive motion. A cyclical bore is a perfectly cylindrical tubing assembly in combination with a conical leadpipe and bell system. This allows for consistent air flow throughout the horn. Tapered valves wear for a long time without air leakage. The combination of the secure high register, strong projection, and quick attack of the Bb horn with the rich, warm timbre of the F horn make the double horn ideal for most playing situations. Features: warm clear sound, great tone color flexibility with rich focused core, excellent projection in any venue, accurate intonation, comfortable and quick response.